The high-key values of Colin Graeme Roe give it an effulgent, almost bleached quality. Temperature is cool-dominant, with blue and green families claiming the largest areas. Chroma is moderate: colours carry enough saturation to be read as colour, but the palette stops well short of garish intensity. Only 7.1% is devoted to #D9CCAB, yet that small allocation delivers the palette's entire chromatic tension. A value spread of 63 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. Palette 1 sits within the larger chromatic argument that Colin Graeme Roe's complete body of work advances.